Trijicon ACOG 4x32 Dual-Illuminated Red Donut | 5.56 BDC Combat Optic TRTA31

The Trijicon ACOG 4x32 is a battle-hardened optic designed for one thing: speed and precision in the 5.56 NATO platform. While most optics are only as good as the batteries inside them, the ACOG is engineered for total independence. By using a passive dual-illumination system of fiber optics and tritium, it removes the risk of electronic failure entirely. Whether you're in high-noon sun or total darkness, the reticle is always visible, always on, and completely fail-safe.

By ditching complex electronics, the ACOG gains incredible durability. Daytime brightness is automatically regulated by a fiber optic tube that harvests ambient light, while tritium keeps you on target in low light—no buttons or dials required. This fixed 4x prism design eliminates the moving parts found in variable scopes, resulting in a rock-solid zero that won't shift under heavy recoil, drops, or hard combat use.

Forged from 7075-T6 aircraft-grade aluminum, the ACOG is virtually indestructible but still light enough to keep your rifle agile. The 4x32 system hits the "sweet spot" of magnification, offering enough power for long-range identification while maintaining a wide enough field of view for close-range work. It’s an optic that thinks for you—continuously adapting to changing light transitions so you can focus on the target rather than your settings.

Key Features

• Dual-Illumination System: Tritium and fiber optic light harvesting ensure an always-visible reticle with zero battery dependency.
• Fixed 4x Prism Design: A streamlined architecture with fewer internal components provides superior durability and zero retention under heavy recoil.
• 5.56 BDC Reticle: Calibrated holdover stadia allow for rapid distance compensation without the need for manual turret adjustments.
• Bindon Aiming Concept (BAC): Supports both-eyes-open operation for increased situational awareness and significantly faster target acquisition.

Technical Specification

• Optics: 4x Fixed | 32mm | Fixed Prism
• Interface: Red Donut BDC (.223/5.56) | Fixed | Fixed Parallax
• Precision: 0.5 MOA | Recoil Rated .22LR to .50 BMG
• Specs: 36.8 ft FOV @ 100 yds | 1.5 in Eye Relief | 8 mm Exit Pupil
• Build: 7075-T6 Aluminum | Matte Black | 10.9 oz | 5.93 in
• Environment: Waterproof to 66 ft | Nitrogen Purged | Fiber Optic & Tritium
• Included: TA51 Mount | Scopecoat | Lenspen | Sticker
• Warranty: Limited Lifetime | Tritium Lamp 15 Years
• Made in the USA

When system reliability is non-negotiable, the ACOG platform remains the benchmark. Secure the Trijicon ACOG 4x32 from SMKW and deploy a proven, battery-free optic engineered for real-world conditions.